JPH039054U

JPH039054U -

Info

Publication number: JPH039054U
Application number: JP6911589U
Authority: JP
Priority date: 1989-06-15
Filing date: 1989-06-15
Publication date: 1991-01-29

Description

[Brief explanation of the drawing]

第１図乃至第３図はこの考案に係る作図装置の
実施例を示し、第１図は機能ブロツク図、第２図
はハードウエアのブロツク図、第３図はフローチ
ヤートである。第４図は従来例の機能ブロツク図
である。主な符号の説明、１……文字、図形入力装置、
２……マイクロコンピユータ、２ａ……記憶装置
、３……表示装置。 1 to 3 show an embodiment of the drawing device according to the invention, in which FIG. 1 is a functional block diagram, FIG. 2 is a hardware block diagram, and FIG. 3 is a flowchart. FIG. 4 is a functional block diagram of a conventional example. Explanation of main symbols, 1...Character, graphic input device,
2...Microcomputer, 2a...Storage device, 3...Display device.

Claims

[Scope of claim for utility model registration] An arc composed of 16-bit integers in order to draw an arc with a microcomputer-controlled drawing device that inputs characters and drawing data into a digitizer using a mouse or stylus pen and displays a drawing screen on a display. arc data input means for inputting the coordinate values of the starting point and end point, radius, and circular arc data in the direction of the center; center point coordinate calculation means for calculating center point coordinates of 16 bits from the input circular arc data; A drawing device comprising a circular arc drawing means for drawing a circular arc, which includes a linear arc approximation means and a straight line drawing means, wherein the center point coordinate value of the result in the center point coordinate calculation means is 16 bits or less. When expressed in a bit configuration, the arc is drawn by the arc drawing means, and when the center point coordinate value becomes a bit structure of 17 bits or more, the arc linear approximation means and the straight line drawing means are used. A drawing device characterized by drawing an arc with.